Nordgens are the best way to build a team without replacing your whole roster every season.

However you need to invest in them to make it work. If you are not able to buy tokens or farm them then you likely cannot afford to go that route.

Players who use 35T a season usually have to focus on older players and replace them frequently. This route requires care as in the early levels it is these that end up in bidding wars, the expensive players don't get many bids.

There are ways to farm tokens and especially green packs to train them (Facebook is best for those) but it varies depending on the country you live in.